Lemans GTS~R motor?

[bushido]

Does anyone know if this is an actual GTS~R motor, or one built by Exotic Engine?
I couldn't find anymore info because I think E.E. might of went out of business. With that being said, that CF intake manifold is badass I would love to have that kind of setup on my GTS..

[REDSLED]

Yes, that is GTSR motor that went to France I believe. The C/F housings over the heads actually hold the air filters. The air filters are about 30" long. Those motors have 10 individual throttle bodies that are very tempermental. His motors make fantastic HP and those of us who have his race motors have had no issues. EE is not out of business, he operates a shop in Reno, NV. My racecar is heading up ther in mid Dec for a freshening and a few more HP tweeks.

[Bluemax]

Nice find. What kind of numbers does it put out ?

[Disturbed ACR]

It is interesting that the filters are so close to the TB. I would think you would want a little room for the port volecity to increase after it hits that "speed bump" called an airfilter.

One thing is forsure, the stock intake system sucks ass. Filters too small, TB too small, intake tubes too small, Intake plenum too small, intake runners too long, intake ports too small, valves too small.

With a good intake mani, and a built motor to match with a 7,000rpm redline...700rwhp N/A should be easy.

[dirtbag]

Originally Posted by Disturbed ACR

......
Filters too small, TB too small, intake tubes too small, Intake plenum too small, intake runners too long, intake ports too small, valves too small........

Just admit it. You ordered "extends" from those late night paid programming infomercials.

[bushido]

Originally Posted by REDSLED

Yes, that is GTSR motor that went to France I believe. The C/F housings over the heads actually hold the air filters. The air filters are about 30" long. Those motors have 10 individual throttle bodies that are very tempermental. His motors make fantastic HP and those of us who have his race motors have had no issues. EE is not out of business, he operates a shop in Reno, NV. My racecar is heading up ther in mid Dec for a freshening and a few more HP tweeks.

So do you have that same CF intake manifold setup on your motor? Also is Kevin's new shop in Reno under a different name?

[bushido]

Originally Posted by Disturbed ACR

With a good intake mani, and a built motor to match with a 7,000rpm redline...700rwhp N/A should be easy.

I heard that the Lemans Vipers were right at 800rwhp..

[REDSLED]

Lee, I have the regular Gen 2 intake on the race car. Couldn't justify the extra $10K for the intake set up at my level of racing. The more HP you have the bigger the racing slick you need to use and the better your brakes need to be. Adding big HP to a motor requires upgrading other portions of the car in order to maximize the added HP. The GTSR motors came in 3 configurations from Dodge, depending on what series the car was to run in. The Le Mans GTSR's were not at 800 RWHP. More like 650-750 at the crank, depending on the build. Remember, a factory GTSR weighs in at around 2600 lbs as all the body panels are C/F. The reduction in weight is what makes the GTSR's such a great road race car. What those engine pics don't show is the large trumpets (restrictors) that the engine has to suck the air through.

[Westerner]

That is a trick looking motor.

[Disturbed ACR]

Originally Posted by bushido

I heard that the Lemans Vipers were right at 800rwhp..

More like 550-650rwhp.

[Disturbed ACR]

Originally Posted by REDSLED

Lee, I have the regular Gen 2 intake on the race car. Couldn't justify the extra $10K for the intake set up at my level of racing. The more HP you have the bigger the racing slick you need to use and the better your brakes need to be. Adding big HP to a motor requires upgrading other portions of the car in order to maximize the added HP. The GTSR motors came in 3 configurations from Dodge, depending on what series the car was to run in. The Le Mans GTSR's were not at 800 RWHP. More like 650-750 at the crank, depending on the build. Remember, a factory GTSR weighs in at around 2600 lbs as all the body panels are C/F. The reduction in weight is what makes the GTSR's such a great road race car. What those engine pics don't show is the large trumpets (restrictors) that the engine has to suck the air through.

I remember seeing in one of the Viper books I have that you could order a 750hp GTS-R motor.

[Hardcore]

That is an one amazing looking motor.

[SpawnAero_John]

Thats fuckin sweet!

[NEVERSATISFIED]

Damn !

[torquemonster]

this setup made well over 700hp over here in NZ at just 5600rpm



it ran huge TB's and a very high overlap cam that created great power without requiring high rpms.

[Disturbed ACR]

Originally Posted by torquemonster

this setup made well over 700hp over here in NZ at just 5600rpm



it ran huge TB's and a very high overlap cam that created great power without requiring high rpms.

What happen to the brake booster?

What kind of intake is that?


How would filters inside the intake mani change the airflow vs being in a standard config? Wouldn't it slow the air down once inside the intake mani?

[torquemonster]

Originally Posted by Disturbed ACR

What happen to the brake booster?

What kind of intake is that?


How would filters inside the intake mani change the airflow vs being in a standard config? Wouldn't it slow the air down once inside the intake mani?

no idea to the above except the intake was custom made in NZ for that car. It ran twin 100mm TB's I believe

[Disturbed ACR]

TQ,


For port volocity, wouldn't it be better to use 4 stock sized TB vs 2 100mmTB's?

What would be an ideal R/S ratio for a 9000rpm OHV Motor?

NASCAR has figured out how to make a push rod motor live at 9500rpm, we sould be able to make a viper motor rev to 8500-9000rpm.

[ROGUEGTS]

Originally Posted by Disturbed ACR

TQ,


For port volocity, wouldn't it be better to use 4 stock sized TB vs 2 100mmTB's?

What would be an ideal R/S ratio for a 9000rpm OHV Motor?

NASCAR has figured out how to make a push rod motor live at 9500rpm, we sould be able to make a viper motor rev to 8500-9000rpm.

Lot more than that goes into all this, and R/S ratio isn't nearly as important as you think. Stroke plus 2" puts your right in the sweet spot. This works for average motors up to 800+ ci monsters.

Stock viper block/crank won't ever touch 9k rpm with the 3" main bearings, speed is WAY too high. GTS-R would be better with the 2-3/4" mains.

Other than the pushrods, cup car motors have nothing in common with a viper v10, so using them as a benchmark is laughable. But one of the main things is making all the moving parts lighter and building a very stiff valve train. Jesel shaft rockers are the only option with solid lifters and some crazy strong valve springs. Oh and look forward to changing those valve springs on a regular basis because they wear out relatively quickly.

Throttle body size isn't as critical as you think. The main downside to larger ones is you lose the control at throttle tip-in. 4 May be better but would be a total clusterfuck.

You should be able to get one to turn 7500 pretty easy with relatively normal parts. The big thing that needs to go is the intake manifold, it was built almost as a truck manifold with those super long runners. This one lacks a bit of plenum volume but all in all would be a massive step up.
http://www.mitechengines.com/viper/viper%20page-1.htm

Or you could just shell out the $40k for the full gts-r setup and make it scream.

[torquemonster]

What Rogue said. R/S ratios help with longevity up high but for drag racing fixes have been found to keep motors alive with ridiculous side loads.

An endurance capable 9000 rpm V10 would require a short stroke and billet block (LSM Engineering) with custom crank and billet heads that flow north of 400cfm on all 10 pots. It'd be a significantly smaller motor in cubes. For drag racing you could keep stock size but you would still need the smaller bearing sizes Rogue talked about and lighter crank... on top of all that you'd need an engine builder who knew how to get an engine to run up there.... that list would be short even amongst Nascar engine builders who could make this work on a Viper. You'd need $100k+ in that motor before you could rely on it over a mile